Stump-burner.



W. H. BRASIER.

STUMPBURNBR.

APPLIOATION FILED NOV. 22, 1912.

1,082,619. Patented Dec.3( ),1913.

Z) J d 2/ .59 i

Attorneys Witnesses Inventor WILLIAM H. BRASIER, or CORPUS ennrsrr', TEXAS.

STUMP-BURNER.

Specification of Letters Patent. Patented Dec. 30, 1913.

Application filed November 22, 1912. Serial N 0. 732,991.

To all whom it may concern:

Be it known that I, WILLIAM H. BRAsInR, a citizen of the United States, residing at Corpus Christi, in the county of Nueces and State of Texas, have invented a new and useful Stump-Burner, of which the following is a specification.

The device forming the subject matter of this application, is a burner, adapted to be employed for burning out stumps.

One object of the present invent-ion is to provide novel means for controlling the flow of fuel and of air through the combustion head of the burner.

Another object of the invention is to provide novel means for securing the conversion of a liquid fuel into gas and to provide means for securing a combustion of the gas.

The invention aims, further, to increase the utility of devices of that type to which the present invention appertains.

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of invention can be made within the scope of what is claimed without departing from the spirit of the invention.

In the drawing :F igure 1 shows the invention in side elevation; parts being broken away; Fig. 2 is a longitudinal section of the combustion head, the same being shown partly in section and partly in elevation; Fig. 3 is a vertical section of the fuel and air controlling valves; and Fig. 4 is a transverse section on the line H of Fig. 3.

In carrying out the invention, there is provided a fuel supply tank 1, carrying a pressure gage 2, and provided with a filling plug 3. Mounted upon the tank 1 and eX- tending thereinto is a pump 4, the piston of which is actuated by a handle 5, there being a hook 6 pivoted to the tank 1 and adapted to engage the handle 5, to prevent the piston of the pump t from moving upwardly or.outwardly, due to the pressure which is accumulated in the tank 1 by the operation of the pump 4, should the pump valve leak.

Referring particularly to Fig. 3 it w1ll be seen that a cylindrical jacket 7 is secured to the under face of the top of the tank 1, the jacket 7 having in one side an air inlet 8 and being provided in its bottom with an opening 9. Journaled for rotation in the jacket 7 is a hollow, primary valve 10 having a port 11 adapted to be brought into registration with the port 8, when the valve 10 is rotated. Secured to the bottom of the valve 10 is a pipe 12 which extends through the opening 9 and is prolonged downwardly to a point adjacent the bottom of the tank 1. The valve 10 is held against vertical movement by the top of the tank 1 and the bottom of the jacket 7. The valve 10 is equipped with a neck 14 journaled for rotation in the tank 1. Threaded or otherwise secured to the neck 14 is a valve casing 15 provided with a passage 16 which connnunicates with the bore of the neck 14: and with the interior of the valve 10. The casing 15 is equipped with a duct 17 disposed preferably at right angles to the passage 16, the duct 17 being enlarged at its inner end, to form a valve seat 18, adapted to be engaged by a secondary valve 19 carried by a stem 20 which is threaded into the casing 15, the stem 20 being received within a packing gland 21, the exposed end of the stem 20 carrying a hand wheel 22 or the like, whereby the valve 19 may be brought into and out of registration with the seat 18, so as to close and to open the duct 17.

A flexible inner tube 23 communicates with the duct 17, the casing 15 being provided with a stem 24, receiving one end of a flexible tube 25, which surounds the flexible inner tube 23 to protect the same. The outer end of the flexible outer tube 25 is connected with a rigid tubular support 26, upon which is mounted to slide and to rotate, a handle 27 The outer end of the tubular support 26 is threaded or otherwise engaged with a bore 29, formed in one end of a coupling 28 there being another concentric bore 30 in the coupling 28, the bore 30 receiving the outer end of the flexible inner tube 23, as shown most clearly in Fig. 2. The coupling 28 is equipped with a duct 31, communicating with a chamber 32, one end of which is formed into a valve seat 33, adapted to receive a ball valve 34, movable in the chamber 32. The ball valve 34 acts as a check valve. In the outer end of the coupling 28 there is an opening 35 defining a shoulder 35 th opening 35 being threaded to receive a disk 36 which abuts against the shoulder 35 and is provided with an opening 37. Threaded into the opening 35 and abutting against the disk 36 is a nipple 38 which is connected with a combustion head 39. The combustion head 39 comprises a base 40 and a tubular extension 41, the parts 40 and 41 being threaded together, or otherwise attached to each other, as indicated at 42. The pipe 23 and the extension 41 together with adjacent parts constitute a stump-engaging tubular member. The outer end of the nipple 38 is threaded as indicated at 43, into the base 40. The invention further includes a tube 44, located within the combustion head 39 and preferably concentric therewith. The tube 44, is united by means of a coupling 45, with the end of the nipple 38. A disk 46 is bound between the ends of the tube 44 and the nipple 38, the disk 46 being located within the coupling 45. Disks 47 are secured to the tube 44 by threading or otherwise. Secured in the outer end of the tube 44 is a disk 48. Metallic balls 49 are located between the several disks, within the tube 44. The disks 46 and 47 are equipped with ducts 50, the ducts 50 being terminally enlarged to form seats 51 adapted to receive the balls 49. In the disk 48 there is an opening 52. The extension 41 is provided in its side wall with a plurality of perforations 53.

In practical operation the tank 1 is partially filled with a liquid fuel, introduced through the filling plug 3. The handle 5 of the pump 4 is manipulated until the desired amount of air pressure is obtained within the tank 1, the pressure in the tank being inclicated on the gage 2. When the desired pressure has been obtained within the tank 1, the handle 5 of the pump is held against movement, by engaging the same with the hook 6 which is pivotally mounted on the top of the tank 1. The fluid fuel will be forced by the pressure Within the tank 1, upwardly through the pipe 12, the fuel passing into the interior of the primary valve 10. At the same time, air will enter the interior of the valve 10 through the registering ports 8 and 11. The desired mixture of air and fuel will thus be obtained, within the valve 10, and this mixture, passing upwardly through the passage 16, will enter the duct 17, and pass thence into the flexible tubular member 23, the flow of mixture being regulated by manipulating the hand wheel 22, to space the secondary valve 19 properly with respect to the seat 18 which is formed in the member 15. The mixture, traversing the tubular member 23, will pass through the duct 31 into the chamber 32 in the coupling 28, the ball 34 acting as a check valve to prevent rearwardly movement of the mix ture. The mixture will pass thence through the opening 37 in the disk 36, and through the ducts 50 in the several disks 46 and 47, the mixture ultimately being discharged through the opening 52 in the terminal disk 48. The mixture will pass thence into the interior of the member 41 of the combustion head, the perforations 53 serving to promote the combustion of the ignited gas. At this point it may be stated that the balls 49 act as check valves, preventing gas from flowing rearwardly. Further, the balls 49 serve to break up the mixture into a spray, and to discharge the mixture against the inner surface of the tube 44. The balls 49, being fashioned from metal, soon become heated to a high degree, and thus the conversion of the mixture into gas is promoted.

hen it is desired to control the air supply entering the valve 10 through the port 8, the valve casing 15 may be rotated. Because the valve casing 15 is connected with the valve 10, the valve 10 will be rotated also, thereby controlling the extent of the air inlet opening defined by the ports 8 and 11. The flow of mixture of air and fuel from the valve 10 into the duct 17 may, be controlled by manipulating the valve 19 through the medium of the hand wheel 22.

Having thus described the invention, what is claimed is 1. In a stump burner, a combustion head comprising an outer combustion tube and an inner tube united at one end, the inner tube having a fuel inlet opening and a fuel outlet opening; a ball movable in the inner tube between the openings; and means for supplying fiuid fuel to the inlet opening, the combustion tube constituting means for heating the ball.

2. In a stump burner, a combustion head comprising a fuel supply tube having inlet and outlet openings; and a metallic ball movable in the tube between the openings, the ball cooperating with the inlet opening to act as a valve, the ball constituting also, a spraying means and a means for gasifying the fuel; means for supplying fuel to the inlet opening; and means for confining burning fuel around the tube to effect a heating of the ball.

3. In a stump burner, a combustion head comprising a fuel supply tube having inlet and outlet openings;- disks connected with the tube and located between the openings, the disks being provided with ducts, and one duct being enlarged to form a seat; and a ball movable between the disks and adapted to register in the seat, the disks constituting means for limiting the movement of the ball whereby the same will constitute a spray-forming means.

4. In a stump burner, a fuel supply tank; a valve jacket secured to the tank; a hollow primary valve j ournaled in the valve jacket, the primary valve and the valve jacket being provided with alinable openings; a fuel supply pipe extended into the valve jacket and communicating with the primary valve; a valve casing connected with the primary valve and having a passage communicating with the interior of the primary valve; a secondary valve in the casing, adapted to close the passage; a tubular member secured to the valve casing and communicating With the passage; and a combustion head upon the tubular member.

5. In a stump burner, a fuel supply tank; an air pump discharging into the tank; a rotatory valve 'journaled on the tank and provided with an air inlet and With a fuel inlet; a fixed element constituting a closure for the air inlet When the valve is rotated; a member for rotating the valve; said member having a passage communicating With the valve; means in said member for controlling the passage; and a stump engaging tubular element connected with said memher and constituting a continuation of the passage.

' 6. In a stump burner, a fuel supply tank; a rotatory valve structure journaled 011 the tank, the valve structure being provided With a fuel passage and With an air inlet; a member constituting a closure for the air inlet when the valve structure is rotated; independently movable means in the valve structure for controlling the fuel passage; and a stump engaging tubular member connected With the valve structure and constituting a continuation of the passage.

In testimony that I claim the foregoing as my own, I have hereto affixed my signature in the presence oftWo Witnesses.

WILLIAM H. BRASIER. lVitnesses:

CLARENCE C. CRAM, W. L. HAMMER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

